1. Java 코드:
주로 DOM을 사용하여 작업합니다.
package test; import java.io.IOException; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerConfigurationException; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.NodeList; import org.w3c.dom.Text; import org.xml.sax.SAXException; public class XmlOprate { Document doc; DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder; NodeList imags; String path; public NodeList getImags() { return imags; } public void setImags(NodeList imags) { this.imags = imags; } /** * 构造方法 * @param path:xml文件的路径 * @param nodes:要解析的xml节点名称 */ public XmlOprate(String path) { super(); this.path = path; System.out.println(System.getProperty("user.dir")); } /** * 解析XML * @param path */ public void readXml(){ try { builder = factory.newDocumentBuilder(); Document doc=builder.parse(path); doc.normalize(); NodeList imags =doc.getElementsByTagName("imags"); this.setImags(imags); for (int i=0;i<imags.getLength();i++){ Element link=(Element) imags.item(i); System.out.print("title: "); System.out.println(link.getElementsByTagName("title").item(0).getFirstChild().getNodeValue()); System.out.print("URL: "); System.out.println(link.getElementsByTagName("url").item(0).getFirstChild().getNodeValue()); System.out.print("imgsrc: "); System.out.println(link.getElementsByTagName("imgsrc").item(0).getFirstChild().getNodeValue()); System.out.println(); } }catch (ParserConfigurationException e) { e.printStackTrace(); } catch (SAXException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } /** * addCode * @param path */ public void addXmlCode(String imgsrc,String title,String url){ try { builder = factory.newDocumentBuilder(); Document doc=builder.parse(path); doc.normalize(); Text textseg; Element imag=doc.createElement("imags"); Element linkimgsrc=doc.createElement("imgsrc"); textseg=doc.createTextNode(imgsrc); linkimgsrc.appendChild(textseg); imag.appendChild(linkimgsrc); Element linktitle=doc.createElement("title"); textseg=doc.createTextNode(title); linktitle.appendChild(textseg); imag.appendChild(linktitle); Element linkurl=doc.createElement("url"); textseg=doc.createTextNode(url); linkurl.appendChild(textseg); imag.appendChild(linkurl); doc.getDocumentElement().appendChild(imag); TransformerFactory tFactory =TransformerFactory.newInstance(); Transformer transformer; transformer = tFactory.newTransformer(); DOMSource source = new DOMSource(doc); StreamResult result = new StreamResult(new java.io.File(path)); transformer.transform(source, result); }catch(Exception e){ } } /** * delete xml code * @param path */ public void delXmlCode(){ try { builder = factory.newDocumentBuilder(); doc=builder.parse(path); doc.normalize(); NodeList imags =doc.getElementsByTagName("imags"); Element elink=(Element) imags.item(0); elink.removeChild(elink.getElementsByTagName("imgsrc").item(0)); elink.removeChild(elink.getElementsByTagName("title").item(0)); elink.removeChild(elink.getElementsByTagName("url").item(0)); doc.getFirstChild().removeChild(elink); TransformerFactory tFactory =TransformerFactory.newInstance(); Transformer transformer = tFactory.newTransformer(); DOMSource source = new DOMSource(doc); StreamResult result = new StreamResult(new java.io.File(path)); transformer.transform(source, result); } catch (ParserConfigurationException e) { e.printStackTrace(); } catch (SAXException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (TransformerConfigurationException e) { e.printStackTrace(); } catch (TransformerException e) { e.printStackTrace(); } } }
2. XML 부분
<?xml version="1.0" encoding="UTF-8" ?> <root> <imags> <imgsrc>images/ad-01.jpg</imgsrc> <title>胡志明市</title> <url>http://torchrelay.beijing2008.cn/cn/journey/hochiminhcity/</url> </imags> <imags> <imgsrc>images/ad-02.jpg</imgsrc> <title>香港2</title> <url>http://torchrelay.beijing2008.cn/cn/journey/hongkong/</url> </imags> </root>
3. 올바른 xml을 살펴보세요. 연산 세 가지 메소드(읽기, 쓰기, 삭제), 초기화 문은 모두 동일합니다.
builder = factory.newDocumentBuilder(); Document doc=builder.parse(path); doc.normalize();
하지만
builder = factory.newDocumentBuilder();
을 초기화 문에 넣었습니다. 빌더에서는 읽히지 않는 문제가 있는데 쓰거나 삭제할 때 오류가 발생합니다.
그래서 지금은 이렇게 작성했는데 좋은 방법이 생각나지 않네요. 여기에 먼저 올렸습니다.